When Hostile Takeover takes control of a unit in response to its attacking ability trigger, what happens to that ability?

Ruling: When you gain control of a unit with Hostile Takeover after its attacking ability has triggered, the original owner retains control of that trigger on the chain. The trigger resolves with its original targets and effects unchanged.

Nuances:

• Gaining control of a unit does not give you control of its triggers already on the chain
• You cannot choose new targets for existing triggers when you gain control of the unit
• The trigger can still reference the unit that generated it (e.g., its might value) even though the trigger's controller differs from the unit's current controller
• For Volibear, Furious: the effect does not fizzle and still resolves
• For Ezreal, Dashing: you do not get the defend effect; the attacking effect still resolves for the original owner